Get .param from log / redundant entries


I’m trying to format a parameter file from a log file. As I realized, that there are some entries redundant in the log file, as for example STAT_FLTTIME.
Is this a bug, or does that make sense?
Doesn’t make it sense to write parameters at the beginning of the log, or will parameter-changes during flight be reported in the log? Maybe this chould be stated different then. Maybe ParameterChange PARC?